|Type|Stage|Cyclist|Team|Reason|
|---|---|---|---|---|
|DNF|2|Rémi Pauriol|Cofidis|Broken collarbone|
|DNS|3|José Ángel Gómez Marchante|Cervélo TestTeam|Broken arm sustained from crash in Stage 2|
|DNS|3|Daniel Martin|Garmin-Slipstream|Illness|
|DNS|3|Joost Posthuma|Rabobank|Illness|
|DNF|3|Matteo Bono|Lampre-NGC||
|DNF|3|Anthony Charteau|Caisse d'Epargne||
|DNS|4|Sylvain Calzati|Agritubel||
|DNS|4|Bradley Wiggins|Garmin-Slipstream|Death in the family|
|DNF|4|Jussi Veikkanen|Française des Jeux||
|DNS|5|Íñigo Cuesta|Cervélo TestTeam||
|DNS|5|Enrico Franzoi|Liquigas||
|DNF|5|Steven Cozza|Garmin-Slipstream||
|DNF|5|Philippe Gilbert|Silence-Lotto||
|DNF|5|Brian Vandborg|Liquigas||
|DNS|6|Jelle Vanendert|Silence-Lotto||
|DNF|6|Jose Luis Arrieta|Ag2r-La Mondiale||
|DNF|6|Sébastien Chavanel|Française des Jeux||
|DNF|6|Simon Spilak|Lampre-NGC||
|DNF|6|Thomas Voeckler|Bbox Bouygues Telecom|Shoulder injury sustained from crash|
|DNS|7|Sebastian Langeveld|Rabobank||
|DNF|7|Samuel Sánchez|Euskaltel-Euskadi||
|DNF|7|Mickael Cherel|Française des Jeux||
|DNF|7|Thomas Fothen|Team Milram||
|DNF|7|Marcel Sieberg|Team Columbia-High Road||
|DNF|7|Tom Veelers|Skil-Shimano||
|DNF|7|Mickael Buffaz|Cofidis||
|DNF|7|Javier Aramendia|Euskaltel-Euskadi||
|DNF|7|Romain Feillu|Agritubel||

Question: how many people withdrew in the 4th stage?
Answer: 3